Spark plug replacement how often

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#1
Spark plug replacement how often on a yz250f 06?

How do i know when this needs to be done?

Cheers

Andre
 
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#2
Andre.

The plugs in the new four strokes last for a long time. The electronic ignition systems along with the better materials being used in the plugs keep the plugs from eating themselves.

I have had customers with the same plug in their engines for over a year.

When you take your plug out, inspect the electrode. It should be sharp on the edges. If the edges of the electrode look rough or burnt, replace the plug.
 

ghunter

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#3
I just changed my plug for the first time in my 2004 WR450...and it didn't really even need to be changed, just did it as part of normal maintenance.
 

ghunter

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#5
Depends on how well you have it jetted, how rich your premix is, as well as what type of oil in the premix. Also depends on how you ride it.

If you jet rich, use dino oil instead of synthetic, have a rich premix ratio, and putt around...you'll foul plugs all day long. If you have things setup well, a plug can last much longer.

I changed plugs on my KX once every month, just for grins, but could have gone much longer.
 

IndyMX

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#6
keefbikes said:
What about on a 2 stroke?
I change mine when it needs it.. Say if it's fouled or something like that.

Also, if I happen to race, which almost never happens, I put a fresh plug in that morning.
 
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#8
yep autozone, advanced auto, not sure about walmart but if they had them I wouldnt say so anyway... its only a matter of time before the giant brain that looks like a mall sized building thats called walmart swallows all of our brains and we are left headless freaks...
 

darringer

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#9
I change them about once a year, whether they need it or not. With proper jetting, they shouldn't foul and can easily go a year before the electrode and ground strap are worn out.
 
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#10
Ol'89r said:
Andre.

The plugs in the new four strokes last for a long time. The electronic ignition systems along with the better materials being used in the plugs keep the plugs from eating themselves.

I have had customers with the same plug in their engines for over a year.

When you take your plug out, inspect the electrode. It should be sharp on the edges. If the edges of the electrode look rough or burnt, replace the plug.

Thanks again for your advise , i appreciate the advise im getting off this site. Kinda new to this all.

Thanks
Andre